US20240043090A1 - Gear shift device and associated mobility machine - Google Patents

Gear shift device and associated mobility machine Download PDF

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Publication number
US20240043090A1
US20240043090A1 US18/254,470 US202118254470A US2024043090A1 US 20240043090 A1 US20240043090 A1 US 20240043090A1 US 202118254470 A US202118254470 A US 202118254470A US 2024043090 A1 US2024043090 A1 US 2024043090A1
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US
United States
Prior art keywords
gear
gear shift
shift device
shuttle
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US18/254,470
Other languages
English (en)
Inventor
Jonathan CAILLAUD
Jean Baptiste Siegwart
Quentin DORET
Christophe Laurens
David ROUMEAS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Embrayages SAS
Original Assignee
Valeo Embrayages SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR2012292A external-priority patent/FR3116794A1/fr
Application filed by Valeo Embrayages SAS filed Critical Valeo Embrayages SAS
Assigned to VALEO EMBRAYAGES reassignment VALEO EMBRAYAGES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CAILLAUD, Jonathan, LAURENS, CHRISTOPHE, ROUMEAS, David, DORET, QUENTIN, SIEGWART, JEAN BAPTISTE
Publication of US20240043090A1 publication Critical patent/US20240043090A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M25/00—Actuators for gearing speed-change mechanisms specially adapted for cycles
    • B62M25/08—Actuators for gearing speed-change mechanisms specially adapted for cycles with electrical or fluid transmitting systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/06—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/089—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/08—Multiple final output mechanisms being moved by a single common final actuating mechanism
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/08—Multiple final output mechanisms being moved by a single common final actuating mechanism
    • F16H63/16—Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H2063/3093—Final output elements, i.e. the final elements to establish gear ratio, e.g. dog clutches or other means establishing coupling to shaft
    • F16H2063/3096—Sliding keys as final output elements; Details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/083—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with radially acting and axially controlled clutching members, e.g. sliding keys

Definitions

  • the field of the present invention is that of what is referred to as “soft” mobility, and more particularly that of mobility machines that combine electrical propulsion and muscular force, for example electrically assisted bicycles.
  • Gearboxes for cycles are known from the prior art.
  • the publication FR2975367 A1 discloses a gear shift device for bicycles that has a gearbox and a sliding shuttle for selecting the gear.
  • the axial displacement of the shuttle is controlled via two cables connected to a rotary handle positioned on the bicycle handlebar.
  • This system requires many parts. It is complex to manufacture and maintain. In particular, the cable control requires precise and regular adjustment. There is a need to simplify and automate gearboxes for cycles.
  • the subject of the invention is a gear shift device for a mobility machine
  • Each of the gears has a particular ratio between the output speed and the input speed of the gear shift device.
  • the number of positions of the shuttle is at least equal to the number of gears of the gear shift device.
  • Each gear corresponds to a particular position of the shuttle in which the input pinion of the selected gear meshes with the corresponding output pinion.
  • the hollow shaft turns, which drives the shuttle.
  • the worm screw is rotated by the gear shift actuator.
  • the rotational movement of the worm screw is transformed into a translational movement of the shuttle, which is displaced into the position corresponding to the selected gear.
  • the hollow shaft is a selection shaft, the two expressions being used equivalently in the present application.
  • the invention also provides a compact gear shift device with reduced bulk.
  • the worm screw driven by the gear shift actuator does away with the cables of the prior art and thus affords a more reliable solution which is easy to maintain.
  • the gear shift actuator has mechanical means for bringing about a translational movement of the shuttle, in particular means for transforming a rotational movement into a translational movement.
  • the gear shift actuator also has electric means for moving the shuttle, in particular a reduction gearset.
  • the gear shift device according to the invention has one or another of the following features, taken alone or in combination:
  • the shift device has a rail along which the shuttle is displaced.
  • the rail is housed in particular in the selection shaft.
  • the shuttle may have over its entire length at least one axial channel in which the rail is positioned. The channel, or one of the channels, thus serves to retain the rail.
  • the shuttle is connected to the rail via a nut.
  • the rail constitutes a linear abutment that prevents the rotation of the nut.
  • the axial movement of the nut drives the shuttle and thus changes the gear.
  • the nut is accommodated inside the shuttle.
  • the rail and the nut are thus part of the mechanical means for bringing about a translational movement of the shuttle. They form a pivot connection between the worm screw and the shuttle, transforming the rotational movement of the worm screw into the translational movement of the shuttle.
  • the gear shift device has at least one epicyclic gear train.
  • the latter replaces the rail and the nut of the preceding embodiment.
  • the epicyclic gear train is part of the mechanical means for bringing about a translational movement of the shuttle.
  • the epicyclic gear train is a double epicyclic reduction gear having an inner ring that is integral with the selection shaft and an outer ring that is integral with the worm. The two rings, inner and outer, are linked via at least three satellite pinions.
  • the reduction gearset In order to perform a gear shift, the reduction gearset temporarily turns the outer ring through a determined angle which depends on the necessary displacement of the shuttle between the positions that respectively correspond to the initial gear and to the desired gear. Following the angular deflection thus created between the inner ring and the outer ring, the ratio between the rotation of each ring is temporarily no longer equal to one. The shuttle is thus driven in a translational movement until it reaches a new position corresponding to the new gear that is selected.
  • the invention relates to a transmission assembly for a mobility machine, said transmission assembly having an electric motor, in particular arranged so as to supply all or some of the energy for propelling the machine, and a gear shift device as described above.
  • the invention relates to a mobility machine having a gear shift device, as described above.
  • the machine may have a rechargeable energy source, in particular a battery, for supplying power to the reduction gearset device.
  • Said battery is preferably arranged so as to supply energy to the various members of the mobility machine, in particular the lighting, an optional locating/navigation system, etc., this list being non-limiting.
  • the mobility machine is electrically assisted and has an electric motor, provided for example with a reduction gear.
  • the mobility machine is in particular arranged such that the electric motor can supply the torque when the instantaneous speed of the mobility machine is less than a threshold value.
  • the mobility machine is not electrically assisted.
  • the invention relates to a method for controlling a gear shift device, as described above.
  • the method has a step of triggering a selected gear of the gear shift device.
  • a control unit controls the gear shift actuator on the basis of an order on the part of the user indicating the chosen gear.
  • FIG. 1 is a view of a mobility machine according to one of the aspects of the invention.
  • FIG. 2 illustrates the transmission assembly of the mobility machine of FIG. 1
  • FIG. 3 a , FIG. 3 b and FIG. 3 c show various sectional views of a gear shift device according to a first embodiment of the invention
  • FIG. 4 illustrates a casing that accommodates a gear shift device according to the invention
  • FIG. 5 and FIG. 6 illustrate a gear shift device according to a second embodiment of the invention in section
  • FIG. 7 a to FIG. 7 g schematically show different variants of a gear shift actuator according to the first embodiment of the invention.
  • FIG. 8 a to FIG. 8 g schematically show different variants of a gear shift actuator according to the second embodiment of the invention.
  • FIG. 1 illustrates a mobility machine 900 according to one of the aspects of the invention.
  • the machine 900 is an electrically assisted bicycle having an electric motor 300 with an axis of rotation X m .
  • Said electric motor is arranged so as to provide some of the propulsion of said machine.
  • the motive force is supplied by the cyclist and is transmitted to the wheels 950 via two pedals turning about an axis Xp of a crankset that drives the rear wheel via a chain.
  • the machine 900 has a control unit 800 and multiple sensors 80 , located in particular at the crankset, on the bicycle frame or at a wheel.
  • the machine 900 also has an energy storage device in the form of a battery 910 , a lighting system 920 , a crankset 940 with an axis Xp, a locating and/or navigation system 980 , and a human/machine interface system 990 having in particular a touch screen that can display information for and/or take into account the requests of said user.
  • the human/machine interface system 990 is in particular connected to the locating system 980 and acts as a navigation interface.
  • the invention is not limited to a particular human/machine interface system, and may have any system that is known to a person skilled in the art.
  • the wheels 950 are provided with a braking system 960 , having in particular disk brakes 965 .
  • the machine 900 has a transmission assembly 700 , illustrated in FIG. 2 .
  • the transmission assembly 700 has a gear shift device 100 according to the invention and an electric motor 300 with an axis of rotation Xm for supplying some of the power for propelling the machine 900 .
  • the transmission assembly 700 is at least partially accommodated in a casing 600 (illustrated in FIG. 4 ), positioned here at the crankset 940 , the axis of which coincides with the output axis X 3 of the gear shift device 100 .
  • the gear shift is automatic and electric.
  • the gear shift device 100 illustrated in FIGS. 3 a et seq. has a plurality of 7 gears between a first gear referred to as gear No. 1 and a top gear referred to as gear 7 .
  • the device is compact, the selection shaft 200 is hollow.
  • the gear shift device 150 includes electric means for moving the shuttle, in the form of a reduction gearset.
  • This reduction gearset has a motor 140 and a reduction gear 130 .
  • the gear shift actuator 150 also has mechanical means for bringing about a translational movement of the shuttle 155 , in particular means for transforming a rotational movement into a translational movement.
  • the reduction gearset assembly has a pinion 135 on the axis of the worm screw 132 , an intermediate pinion 135 and a pinion 135 on the axis Xm of the motor 140 .
  • the teeth of the pinion 135 may be straight, as illustrated, or helical, in a variant which is not illustrated.
  • the gears are shifted by a sliding shuttle 155 underneath the free pinions 30 of the gearbox.
  • the gear shift actuator 150 axially displaces the shuttle along a worm screw 132 via a helical kinematic connection.
  • the shuttle 155 therefore stops underneath the input pinion Fr, that corresponds to the selected gear i.
  • a spring/ball system as described in the French patent application FR2975367 A1 (illustrated here in more detail in FIG. 5 ) prevents the rotation of said input pinion Fri. Once it is triggered, the input pinion Fri meshes with and transmits forces to the output pinion Fi, and thus to the chain sprocket linked to the bicycle wheel.
  • FIG. 3 a illustrates in particular a needle bushing on the side of the pinions 135 of the reduction gear 130 and a ball bearing at the other end of the worm screw 132 .
  • FIGS. 3 b and 3 c show detail views of the gear shift device of FIG. 3 a.
  • the shuttle 155 is illustrated in FIG. 3 a in the position P 7 corresponding to a gear No. 7, here the top gear, and engages the input pinion Fr 7 such that it meshes with the output pinion F 7
  • the shuttle 155 in FIG. 3 b the shuttle 155 is in the position P 1 corresponding to a gear No. 1 and engages the input pinion Fr 1 by virtue of a ball/spring device.
  • the shuttle houses a return member 152 that cooperates with a ball 151 of the selection shaft 200 .
  • the shuttle 155 is moreover connected to a rail 134 by a nut 138 .
  • the shuttle 155 surrounding the nut 138 can turn by virtue of the bearing 136 , retained by a clip 137 here.
  • the worm screw 132 is rotated by the gear shift actuator 150 .
  • the worm screw 132 is rotated by the gear shift actuator 150 , this causing the axial movement of the nut 138 which drives the shuttle 155 and thus changes the gear.
  • the pivot connection thus implemented transforms the rotational movement of the worm screw 132 into the translational movement of the shuttle 155 .
  • a stop 133 limits the displacement of the shuttle 155 at each end.
  • the stops 133 are for example hollow, as illustrated, and accommodate bearings 136 that serve to support and guide the worm screw 132 .
  • the shuttle 155 may adopt a position referred to as the neutral position P 0 in which no gear ratio is engaged.
  • the gear shift actuator 150 has straight pinions.
  • the reduction gearset may have helical pinions.
  • FIG. 4 illustrates the casing 600 for the mobility machine 900 of FIG. 1 in more detail.
  • the casing 600 has a crankcase 660 that delimits a first housing 610 arranged so as to accommodate the gearings of the gear shift device 100 .
  • the crankcase 660 also delimits multiple second housings that are separate from one another.
  • the housings 640 , 630 , 615 and 680 are arranged so as to accommodate the electric motor 400 , the reduction gear 300 , the gear shift actuator 150 and the control unit 800 of the mobility machine, respectively.
  • the second housings are preferably sealed, in particular that one which is arranged so as to contain the control unit 800 .
  • the crankcase 660 accommodating the gear shift device 100 is closed by two lateral flanges 667 .
  • the casing 600 is illustrated empty and with just one flange 667 in FIG. 4 in order to make the various first and second housings more visible.
  • the first housing 610 has two facing holes in the lateral flanges 667 for receiving the axle of crankset spindle of the mobility machine 900 .
  • FIGS. 5 and 6 relate to the second embodiment.
  • the gear shift device 100 has an epicyclic gear train 130 ′ having an inner ring 30 int that is integral with the selection shaft 200 and an outer ring 30 ext that is integral with the worm screw 132 .
  • the inner ring 30 int and the outer ring 30 ext are linked by three satellite pinions 135 .
  • the worm screw 132 , the selection shaft 200 and the shuttle 155 turn at the same speed.
  • the reduction gearset 140 temporarily turns the outer ring through a determined angle that depends on the necessary displacement of the shuttle 155 between the positions that respectively correspond to the initial gear and to the desired gear. Following the angular deflection thus created between the inner ring 30 int and the outer ring 30 ext, the ratio between the rotation of each ring is temporarily no longer equal to one.
  • the shuttle 155 is thus driven in a translational movement until it reaches a new position corresponding to the new gear that is selected.
  • the first embodiment with a rail and nut is not limited to one type of reduction gearset having pinions with parallel axes, as illustrated in FIG. 3 a .
  • the axes of the pinions of the reduction gearset may be perpendicular.
  • FIG. 7 a corresponds to an example in which the reduction gearset 130 is limited to a single pinion.
  • FIG. 7 b illustrates a variant in which the gear shift actuator 150 has a conical gearing 130 b .
  • FIG. 7 c illustrates a variant in which the gear shift actuator 150 has a straight-cut or helical gearing 130 c with one or more stages.
  • FIG. 7 d illustrates a variant in which the gear shift actuator 150 has a continuously variable straight-cut or helical gearing 130 d .
  • FIG. 7 e illustrates a worm screw 130 e of a variant of the gear shift actuator 150 .
  • FIGS. 7 f and 7 g show variants having a gear shift actuator 150 with a belt 130 f and a chain 130 g , respectively.
  • FIGS. 8 a to 8 g schematically show different variants of a gear shift actuator according to the second embodiment of the invention.
  • FIG. 8 a corresponds to the example illustrated in FIG. 5 a with the epicyclic gear train 130 ′.
  • FIG. 8 b illustrates a variant in which the gear shift actuator 150 b has an epicyclic gear train 130 ′ and a conical gearing.
  • FIG. 8 c illustrates a variant in which the gear shift actuator 150 c has an epicyclic gear train 130 ′ and a straight-cut or helical gearing with one or more stages.
  • FIG. 8 d illustrates a variant in which the gear shift actuator 150 d has an epicyclic gear train 130 ′ and a continuously variable straight-cut or helical gearing.
  • FIG. 8 e illustrates a variant in which the gear shift actuator 150 e has an epicyclic gear train 130 ′ and a worm.
  • FIGS. 8 f and 8 g show variants having a gear shift actuator 150 f with an epicyclic gear train 130 ′ and a belt, and a gear shift actuator 150 g with an epicyclic gear train 130 ′ and a chain, respectively.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Gear-Shifting Mechanisms (AREA)
US18/254,470 2020-11-27 2021-11-26 Gear shift device and associated mobility machine Pending US20240043090A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR2012292A FR3116794A1 (fr) 2020-11-27 2020-11-27 Dispositif de changement de vitesse et engin de mobilité associé.
FR2012292 2020-11-27
FR2013339A FR3116795B1 (fr) 2020-11-27 2020-12-16 Dispositif de changement de vitesse et engin de mobilité associé.
FR2013339 2020-12-16
PCT/EP2021/083182 WO2022112506A1 (fr) 2020-11-27 2021-11-26 Dispositif de changement de vitesse et engin de mobilité associé

Publications (1)

Publication Number Publication Date
US20240043090A1 true US20240043090A1 (en) 2024-02-08

Family

ID=78821644

Family Applications (1)

Application Number Title Priority Date Filing Date
US18/254,470 Pending US20240043090A1 (en) 2020-11-27 2021-11-26 Gear shift device and associated mobility machine

Country Status (6)

Country Link
US (1) US20240043090A1 (de)
EP (1) EP4251507A1 (de)
JP (1) JP2023551489A (de)
CA (1) CA3200380A1 (de)
TW (1) TW202227321A (de)
WO (1) WO2022112506A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230012006A1 (en) * 2021-07-12 2023-01-12 The Hive Global, Inc. Seal for bicycle crank with differential chainring motion
US12030586B2 (en) * 2021-07-12 2024-07-09 The Hive Global, Inc. Seal for bicycle crank with differential chainring motion

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659408B1 (fr) * 1990-03-06 1992-05-29 Renault Dispositif de commande d'une boite de vitesses mecanique.
FR2805587B1 (fr) * 2000-02-28 2002-05-17 Valeo Dispositif de transmission automatise a engrenages, en particulier pour vehicule automobile
FR2975367B1 (fr) 2011-05-18 2013-06-21 Guy Cavalerie Dispositif de changement de vitesses pour velos
CN208870981U (zh) * 2018-06-13 2019-05-17 陕西理工大学 一种伺服直驱换挡的自动变速器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230012006A1 (en) * 2021-07-12 2023-01-12 The Hive Global, Inc. Seal for bicycle crank with differential chainring motion
US12030586B2 (en) * 2021-07-12 2024-07-09 The Hive Global, Inc. Seal for bicycle crank with differential chainring motion

Also Published As

Publication number Publication date
TW202227321A (zh) 2022-07-16
WO2022112506A1 (fr) 2022-06-02
CA3200380A1 (fr) 2022-06-02
EP4251507A1 (de) 2023-10-04
JP2023551489A (ja) 2023-12-08

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